FIIO K11 Compact Desktop R2R Architecture DAC and Headphone Amplifier (Black)

FiiO K11 R2R DAC Review

Overview

The FiiO K11 R2R is a cutting-edge digital-to-analog converter that boasts impressive features for audiophiles seeking superior sound quality. This product leverages advanced technology to deliver pristine audio performance.

Key Features

Fully-Differential 24-Bit R2R DAC Array

The K11 R2R utilizes a four-channel fully differential 24-bit R2R resistor array, which is composed of 192 high-precision ultra-thin film resistors. This design promises exceptional audio clarity and a dark background, significantly improving your listening experience.

NOS/OS Dual Operating Modes

One standout feature is the dual operating modes: Non-Oversampling (NOS) and Oversampling (OS). Users can switch freely between these modes, offering varied sound characteristics. NOS mode delivers a more musical presentation, while OS mode enhances detail clarity with a sampling rate of up to 384kHz.

Powerful Amplifier Section

The K11 R2R incorporates a professionally designed amp circuitry, featuring Ti OPA1642 as the Low-Pass filter and dual SGM8262 operational amplifiers. The output power reaches up to 1300mW x 2, making it ideal for driving demanding headphones. It also offers three gain modes for compatibility with different gear.

Dual Headphone Output Ports

The device features both a single-ended 6.35mm and a balanced 4.4mm headphone output, allowing users to pair various headphones and IEMs for an enhanced audio experience.

True High-Resolution Audio Signal Processing

The K11 R2R supports high-resolution audio formats, including PCM and DSD signals, capable of handling up to 32-bit/384kHz PCM and DSD256. To achieve optimal performance, DSD256 must be set to native output mode.

Professionally Designed Low-Noise Power Supply

The K11 R2R features a sophisticated low-noise power supply with 17 LDO precision voltage regulators and 2 DC-DC converters. Coupled with an external 12V power supply, it ensures minimal noise and distortion, delivering a quality sound experience.

Conclusion

The FiiO K11 R2R is a versatile and powerful DAC that offers audiophiles a range of features designed to enhance sound quality. With its advanced technology and thoughtful design, it stands out as a top choice for those serious about their audio experience.